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quiz: MDL-16478 Allow different open/close dates, etc. for individual students or groups.

Browse source 
This was implemented by Matt Petro of the University of Wisconsin - Madison Engineering
School and Math Department. Many thanks. Reviewed by and committed by Tim Hunt.

This adds a new Overrides tab to the UI, with sub-tabs Group overrides and User overrides.
Each of those lists all the overrides that currently exist, and lets you manage them and
create more.

When a quiz is being attempted, the override that applies to the current user is combined
with the current quiz settings loaded from the quiz table (normally called $quiz).
If there are both user and group overrides, then just the specific user override is used (more specific).
If the user is in several groups, then the overrides are combined to give the most permissive set of options.

There is one new database table quiz_overrides, to store the overrides.
This commit is contained in:
Tim Hunt 2010-03-08 16:01:38 +00:00
parent cdede6fbfe
commit 990650f94c
25 changed files with 1309 additions and 127 deletions
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74
mod/quiz/restorelib.php
View file

@ -113,6 +113,8 @@
$status = quiz_question_instances_restore_mods($newid,$info,$restore);
//We have to restore the feedback now (course level table)
$status = quiz_feedback_restore_mods($newid, $info, $restore, $quiz);
//We have to restore the overrides now (course level table)
$status = quiz_overrides_restore_mods($newid, $info, $restore, $quiz);
//Now check if want to restore user data and do it.
if (restore_userdata_selected($restore,'quiz',$mod->id)) {
//Restore quiz_attempts
@ -241,6 +243,78 @@
return $status;
}
//This function restores the quiz_overrides
function quiz_overrides_restore_mods($quiz_id, $info, $restore, $quiz) {
global $DB;
$douserdata = restore_userdata_selected($restore,'quiz',$quiz_id);
$status = true;
//Get the quiz_feedback array
if (array_key_exists('OVERRIDES', $info['MOD']['#'])) {
$overrides = $info['MOD']['#']['OVERRIDES']['0']['#']['OVERRIDE'];
//Iterate over the feedbacks
foreach ($overrides as $override_info) {
//traverse_xmlize($override_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//We'll need this later!!
$oldid = backup_todb($override_info['#']['ID']['0']['#']);
//Now, build the quiz_overrides record structure
$override = new stdClass();
$override->quiz = $quiz_id;
$override->groupid = backup_todb($override_info['#']['GROUPID']['0']['#']);
$override->userid = backup_todb($override_info['#']['USERID']['0']['#']);
$override->timeopen = backup_todb($override_info['#']['TIMEOPEN']['0']['#']);
$override->timeclose = backup_todb($override_info['#']['TIMECLOSE']['0']['#']);
$override->timelimit = backup_todb($override_info['#']['TIMELIMIT']['0']['#']);
$override->attempts = backup_todb($override_info['#']['ATTEMPTS']['0']['#']);
$override->password = backup_todb($override_info['#']['PASSWORD']['0']['#']);
// Only restore user overrides if we are restoring user data
if ($douserdata || $override->userid == 0) {
//We have to recode the userid field
if ($override->userid) {
if (!$user = backup_getid($restore->backup_unique_code,"user",$override->userid)) {
debugging("override can not be restored, user id $override->userid not present in backup");
// do not not block the restore
continue;
}
$override->userid = $user->new_id;
}
//We have to recode the groupid field
if ($override->groupid) {
if (!$group = backup_getid($restore->backup_unique_code,"groups",$override->groupid)) {
debugging("override can not be restored, group id $override->groupid not present in backup");
// do not not block the restore
continue;
}
$override->groupid = $group->new_id;
}
//The structure is equal to the db, so insert the quiz_question_instances
$newid = $DB->insert_record('quiz_overrides', $override);
if ($newid) {
//We have the newid, update backup_ids
backup_putid($restore->backup_unique_code, 'quiz_overrides', $oldid, $newid);
} else {
$status = false;
}
}
}
}
return $status;
}
//This function restores the quiz_attempts
function quiz_attempts_restore_mods($quiz_id,$info,$restore) {
global $CFG, $DB;